Temperature & Time Controller Thermometer Wood Chimney Stove Pipe Flue Alert Boiler Water it is accurate controller with 0.1 C or 0.1 F resolution controlling and Selection between Celsius and Fahrenheit Included Temperature and timer controller, sensor, manual and Wiring diagram for installation Equipped with buzzer alarm for high or low temperature alarm setting and Temperature Calibration Temperature Range -22 to 480 F (0-250 C) and timer range 0-999 minute (with 2 type timer action) and It has a 10 Amp output relay for controlling any electric air valve (or other device). Shipping to USA is 3-6 business days. For more information please go to our website Thermomart